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Top News In கடல்சார்வியல் ப்ரோக்ர்யாம் Today - Breaking & Trending Today

What's happening to the most remote coral reefs on Earth?

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IMAGE: Coral Reefs in the Chagos Archipelago had more fish per square meter than reefs in any country surveyed on the Global Reef Expedition the largest coral reef survey and mapping expedition.
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Credit: © Khaled bin Sultan Living Oceans Foundation/Ken Marks
In the middle of the Indian Ocean lies some of the last coral reef wilderness on Earth. The Chagos Archipelago, a collection of atolls, including Earth s largest - the Great Chagos Bank- is home to reefs that have been largely undisturbed by humans for the last 50 years. Some estimates indicate the Chagos Archipelago may contain more than half of the healthy coral reefs remaining in the entire Indian Ocean. These reefs are protected both by their remote location, and in one of the world s largest no-take marine reserves the British Indian Ocean Territory (BIOT) marine protected area. ....

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Sharks can help marine ecosystems survive effects of climate change, FIU study finds

MIAMI — When a major hurricane, extreme heat or other climate threat devastates an ocean s lifeblood, its recovery could be aided by the presence of sharks. ....

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URI researchers: Microbes deep beneath seafloor survive on byproducts of radioactive process

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Credit: Photo courtesy Justine Sauvage
NARRAGANSETT, R.I. - February 26, 2021 - A team of researchers from the University of Rhode Island s Graduate School of Oceanography and their collaborators have revealed that the abundant microbes living in ancient sediment below the seafloor are sustained primarily by chemicals created by the natural irradiation of water molecules.
The team discovered that the creation of these chemicals is amplified significantly by minerals in marine sediment. In contrast to the conventional view that life in sediment is fueled by products of photosynthesis, an ecosystem fueled by irradiation of water begins just meters below the seafloor in much of the open ocean. This radiation-fueled world is one of Earth s volumetrically largest ecosystems. ....

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Sea turtle: Sentinels and victims of plastic pollution in the Adriatic Sea

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IMAGE: Researchers analysed the faecal samples of 45 turtles hospitalised at the Sea Turtles Rescue Center (CRTM) and found plastic debris in all 45 samples. Plastic debris in their intestines can.
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Credit: Carlo Marinacci
Sea turtles are witnesses and victims of the high level of plastic pollution of the Adriatic Sea. A group of researchers at the University of Bologna analysed 45 turtles hospitalised at Fondazione Cetacea in Riccione and found plastic debris in their faeces. Besides confirming the role of turtles as ideal sentinels to monitor plastic pollution in the sea, the results of their analysis - published in the journal Frontiers of Marine Medicine - crucially show how the plastic debris in their intestines can dangerously alter their microbiota, eventually compromising their health. ....

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WHOI and NOAA fisheries release new North Atlantic right whale health assessment review

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IMAGE: A North Atlantic right whale photographed in Cape Cod Bay, Mass. Trauma wounds are scarred over but still very evident, showing that non-lethal entanglement can still have serious health.
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Credit: Photo: J. Durban, NOAA, and Holly Fearnbach, SR3. Permit # 17355-01
Woods Hole, Mass. (February 25, 2021) Woods Hole Oceanographic Institution (WHOI) along with National Oceanic and Atmospheric Administration (NOAA) Fisheries have released the first broad scale synthesis of available information derived from right whale health assessment techniques. The manuscript published today in the science journal
Diseases of Aquatic Organisms, reviews available tools, and current understanding of the health status and trends of individual whales and the species. The paper concludes with recommendations for additional information needs and necessary management actions to enhance the health of individual right whales. ....

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